That video, while amusing, didn't really show off what the Wii U was...still made it seem like an add-on. Only thing close to being different is when the Wii changed into a Wii U...which still looks a lot like a black Wii. On top of that I doubt showing off the weaknesses of the Wii-mote is good advertising, especially since the Wii-mote is still applicable to Wii U games, and it only enforces the assertion that Nintendo sells their systems on gimmicks.

"You're welcome, wahoo!" "O_O" I don't think Nintendo would want to have an ad that makes the Wii look so bad, They still make quite a lot of money from it so I doubt they'd want to kill it off just yet.